The Metropolitan Museum of Art

Returns the objectID of every item the v1 list endpoint knows about - 502,993 ids in one 3.4 MB response, with a total count and no paging. Note this is ~33,500 fewer than the 536,522 the v1.1 search index reports; the two backends disagree.

Returns every objectID held by one or more departments in a single response, with a total count - no paging and no truncation, so a department of 37,000 works comes back whole.

Returns all 19 curatorial departments as departmentId and displayName pairs, from American Decorative Arts (1) to Modern Art (21).

Returns the complete catalogue record for one object: 57 fields including title, artist with nationality and ULAN/Wikidata URLs, date, medium, dimensions, credit line, provenance geography, classification, subject tags, gallery number, public-domain flag and full-resolution primary and additional image URLs.

Searches the collection by keyword and/or structured filters (department, highlight, on-view, medium, geography, creation-year window) and returns a total hit count plus a page of matching objectIDs; the ids must then be resolved one at a time through the object capability. With no parameters at all it pages through the whole 536,522-object index.

Returns the objectIDs of every record whose metadata changed on or after a given date, with a total count - roughly 9,000 for the last three weeks and 93,000 for the year to date.